Montfort-le-Gesnois L'Hospice Wastewater Treatment Plant | Advanced Treatment in Pays de la Loire

Montfort-le-Gesnois L'Hospice is an advanced wastewater treatment plant located in Montfort-le-Gesnois, a commune in the Sarthe department of Pays de la Loire, France. The plant serves a population of approximately 4,033 and has a designed capacity of 4,000 m³/day, with an average discharge volume of 719.48 m³/day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size (between 2,000 and 10,000 population equivalent) are required to provide secondary treatment, but the plant's advanced level indicates a higher standard, likely due to the sensitivity of the receiving environment. The treated effluent is discharged into a local watercourse, which ultimately flows into the Sarthe River, a tributary of the Loire River. The Loire basin is ecologically significant, supporting diverse aquatic life and providing water for agriculture and human consumption. The plant's advanced treatment helps protect downstream water quality in this important river system.

The plant discharges into a local watercourse that drains into the Sarthe River, a major tributary of the Loire River. The Loire basin is one of France's largest watersheds, supporting a rich diversity of fish species and migratory birds. The advanced treatment at this plant helps reduce nutrient loading, which is critical for preventing eutrophication in downstream rivers and the Loire estuary.